Google has launched an instant-messaging (IM) program that allows text chat and computer-to-computer voice connections, a move that highlights the search giant's increasing competition with Yahoo, Microsoft and America Online. You can download Google Talk here. Google also makes it very clear that you do not need Google Talk to use their service, and they provide detailed instructions on using other IM clients to connect to Google Talk. Update: Micheal Robertson announces partnership with Google to promote the use of open standards in VoIP/IM.